Improvements to the equal-parameter BIC for speaker diarization

Stafylakis, T; Anguera, X

dc.contributor.author	Stafylakis, T	en
dc.contributor.author	Anguera, X	en
dc.date.accessioned	2014-03-01T02:52:42Z
dc.date.available	2014-03-01T02:52:42Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36000
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-79959826141&partnerID=40&md5=ae328b4b8cc21dc571842ce6d4427f1a	en
dc.subject	Bayesian Information Criterion	en
dc.subject	Clustering algorithms	en
dc.subject	Speaker diarization	en
dc.subject.other	Bayesian information criterion	en
dc.subject.other	Emission probabilities	en
dc.subject.other	Informative Priors	en
dc.subject.other	Mixture model	en
dc.subject.other	Mixture of Gaussians	en
dc.subject.other	Speaker diarization	en
dc.subject.other	State sequences	en
dc.subject.other	Statistical complexity	en
dc.subject.other	Speech communication	en
dc.subject.other	Clustering algorithms	en
dc.title	Improvements to the equal-parameter BIC for speaker diarization	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	This paper discusses a set of modifications regarding the use of the Bayesian Information Criterion (BIC) for the speaker diarization task. We focus on the specific variant of the BIC that deploys models of equal - or roughly equal - statistical complexity under partitions of different number of speakers and we examine three modifications. Firstly, we investigate a way to deal with the permutation-invariance property of the estimators when dealing with mixture models, while the second is derived by attaching a weakly informative prior over the space of speaker-level state sequences. Finally, based on the recently proposed segmental-BIC approach, we examine its effectiveness when mixture of gaussians are used to model the emission probabilities of a speaker. The experiments are carried out using NIST rich transcription evaluation campaign for meeting data and show improvement over the baseline setting. © 2010 ISCA.	en
heal.journalName	Proceedings of the 11th Annual Conference of the International Speech Communication Association, INTERSPEECH 2010	en
dc.identifier.spage	314	en
dc.identifier.epage	317	en